This is a rather good post on H-6
I do find it interesting here that he says a possible JL-2 firing from the NorthEast can cover most of North America. That would be like 8000km+ range.
H-6K to H-6J have 8000-8500km range with 6-8 ton payload. H-6N can have even longer range with refueling.
H-6J can presumably carry YJ-17/19 type of weapons in the future.
H-6 family also have much higher missions rate. I remember patch put it in the 80s. But at least here they put it far ahead of B-52 here.
According to him, H-6 family can get ready more than 150 bombers in short notice.